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EP3996873B1 - Appareil permettant de vérifier la présence ou l'absence d'un élément abrasif dans une machine pour le traitement de surfaces - Google Patents

Appareil permettant de vérifier la présence ou l'absence d'un élément abrasif dans une machine pour le traitement de surfaces Download PDF

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Publication number
EP3996873B1
EP3996873B1 EP20758341.0A EP20758341A EP3996873B1 EP 3996873 B1 EP3996873 B1 EP 3996873B1 EP 20758341 A EP20758341 A EP 20758341A EP 3996873 B1 EP3996873 B1 EP 3996873B1
Authority
EP
European Patent Office
Prior art keywords
support body
control
control element
abrasive element
engagement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20758341.0A
Other languages
German (de)
English (en)
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EP3996873A1 (fr
EP3996873C0 (fr
EP3996873B8 (fr
Inventor
Luca Bosio
Renzo Valleggi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FABRICA MACHINALE Srl
Original Assignee
Fabrica Machinale Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Fabrica Machinale Srl filed Critical Fabrica Machinale Srl
Publication of EP3996873A1 publication Critical patent/EP3996873A1/fr
Publication of EP3996873B1 publication Critical patent/EP3996873B1/fr
Publication of EP3996873C0 publication Critical patent/EP3996873C0/fr
Application granted granted Critical
Publication of EP3996873B8 publication Critical patent/EP3996873B8/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/10—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material
    • B24D9/085—Devices for mounting sheets on a backing plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/0038—Other grinding machines or devices with the grinding tool mounted at the end of a set of bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J11/00—Manipulators not otherwise provided for
    • B25J11/005—Manipulators for mechanical processing tasks
    • B25J11/0065—Polishing or grinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors

Definitions

  • the present invention relates to the technical field of the machines that are used for working surfaces that are able to move an abrasive element in the space, according to at least two degrees of freedom, and in particular it relates to an apparatus for detecting the presence of an abrasive element in a machine for working surfaces.
  • the invention relates to a method for carrying out such a verification.
  • an abrasive disc is moved with respect to the surface to be worked by an anthropomorphic arm, or however by a support that is mounted on guides in such a way that is possible to move the abrasive element at least in two different movement directions.
  • the abrasive element is constrained to a support by engagement elements arranged to provide a removably engagement, for example by means of Velcro, or an adhesive tape, or also by elements that are able to provide a threaded coupling.
  • the replacement operation of the abrasive element is carried out manually by an operator con with consequent loss of time, and productivity decreasing for the machine. Furthermore, the manual replacement of the abrasive element brings with it the risk to apply the new abrasive disc to the support in a wrong way, and therefore that, during the working operations, the abrasive disc can be removed from the correct position, thus compromising the operation.
  • WO2015/125068 In order to overcome the aforementioned drawbacks in WO2015/125068 an apparatus is provided that is able to carry out automatically the replacement of an abrasive element.
  • the solution described in WO2015/125068 provides a removal station in which a removal device operates that is provided with a sharp edge. It is, furthermore, provided a displacement device to move the support with respect to the removal device up to obtain a removal position in which the sharp edge is interposed between the abrasive element and the support and, therefore, causes the abrasive element to be detached from the support.
  • a detection device is, furthermore, provided to verify at the end of the application operation the presence of a new abrasive element at the backing pad, or the absence of the same between a removal and an application operations. In this way, if the removal operation has failed, it is avoided that the displacement device can move the support body at an application station, where the presence of the worn abrasive element would make it not possible to apply the new abrasive element, or that the backing pad not provided with the abrasive element due to an incorrect positioning of the new abrasive element, could be moved at the surface to be worked with the risk to damage the same.
  • the detection device comprises a colour detection sensor.
  • the abrasive surface of the abrasive element is, normally, of a different colour with respect to the engagement surface of the support body. Therefore, depending on the colour that is detected, the colour detection sensor is able to verify the presence, or the absence, of the abrasive element at the support body.
  • Analogous problems are also encountered with optical detection sensors of different kind, such as photocells, also in this case due to the presence of dusts adhering to the surface of the abrasive element.
  • an object of the present invention to provide an apparatus for verifying the presence of an abrasive element in a machine for finishing surfaces, in particular a grinding machine, a polishing machine, or a sanding machine, which allows to overcome the aforementioned drawbacks of prior art solutions.
  • an object of the present invention to provide a similar apparatus that is able to accurately detect the presence, or the absence, of an abrasive element at the support, or backing pad of the machine for finishing surfaces.
  • a method for verifying the presence, or the absence, of an abrasive element in a machine for finishing surfaces provided by claim 15.
  • an apparatus 100 for verifying the presence, or absence, of an abrasive element 20 in a machine for finishing surfaces 1, in particular at a support body 10, or backing pad, of the same is diagrammatically shown. More precisely, the apparatus 100 can be provided with a working head 50 integral to the aforementioned support body 10 having an engagement surface 15 arranged to engage the engagement surface 25 of an abrasive element 20. This, at the side opposite to the engagement surface 25, is preferably provided with an abrasive surface 24 arranged to provide a grinding action at the surface to be worked.
  • first and second engagement elements 13 and 23 configured to reversibly mutually engage with each other (see figures 1C ). These are configured to move from an engagement configuration to a disengagement configuration, or vice versa.
  • the aforementioned first and second engagement elements 13 and 23 can bee, respectively, first and second portions of predetermined size of a touch fastener arranged to reversibly mutually engage with each other, also called, respectively, "male Velcro” and "female Velcro".
  • the aforementioned first and second engagement elements 13 and 23 can be arranged to snap engage one with the other.
  • the first engagement elements 13 can comprises at least a protrusion 13 and the second engagement elements at least a recess 23, or vice versa.
  • the apparatus 100 furthermore, provides a displacement device 40 configured to move the support body 10 in the space according to at least 1 degree of freedom.
  • the displacement device 40 is diagrammatically shown as a anthropomorphic robot, in fact, the displacement device 40, according to the invention, can be configured to move the support body 10 according to one, or more, translational degrees of freedom, or one, or more, rotational degrees of freedom, or according to a combination of movements comprising at least a translational degree of freedom and a rotational degree of freedom and overall according to a number of degrees of freedom comprises between 2 and 6.
  • the displacement device 40 can be configured to cause at least a rotation of the support body 10 about a rotation axis 110 with respect to the working head 50. It is foreseen the possibility that the finishing machine 1 is of a roto-orbital machine and, therefore, that, the displacement device 40 is configured to move the support body 10, in such a way that the same describes an eccentric orbit with respect to the axis of the working head 50.
  • the apparatus 100 provides at least a control station 250 to verify the presence, or the absence, of the abrasive element 20 at the support body 10.
  • the aforementioned control station 250 is equipped with a control device 70.
  • This comprises a control element 75 provided with a control surface 76 equipped with third engagement elements 73 configured to engage with the first engagement elements 13 of support body 10.
  • the third engagement elements 73, as well as the second engagement elements 23, can provide at least a portion of "female Velcro", or "male Velcro".
  • the first engagement elements 13 are constituted by at least a portion of "male Velcro”.
  • the first engagement elements 13 are constituted by at least a portion of "female Velcro".
  • the third engagement elements 73 provide, respectively, a recess, or a protrusion.
  • the verification of the presence, or absence, of the abrasive element 20 at the support body 10 provides that the aforementioned displacement device 40 brings the support body 10 same, or, if present, the abrasive element 20 constrained to the same, into contact with the control surface 76 of the control element 70. Then, the displacement device 40 is operated in such a way to cause a movement of the support body 10, for example a translation along a predetermined direction, or a rotation, or a combination of movements.
  • the displacement device 40 can be arranged to apply a predetermined force, in particular a detachment force, to move the support body 10 away from the control element 75.
  • the apparatus 100 provides also a detection device 80 configured to detect any engagement of the support body 10 with the aforementioned control element 75.
  • the detection device 80 is configured to carry out the aforementioned detection, once that the support body 10, or the abrasive element 20 engaged to it, if present, has been positioned into contact with the control element 75 and has been moved by the displacement device 40.
  • the detection device 80 can be configured to detect the force applied by the displacement device 40 at the support body 10 ( figures 1A and 1B ), or the control element 75 ( figures 2A and 2B ), to move the support body 10 with respect to the control element 75.
  • the detection device 80 is provided integral to the support body 10. In this case, if after having brought the support body 10 into contact with the control element 75 will be necessary, by the displacement device 40, to apply a force greater than a predetermined threshold value, to cause the aforementioned movement of the support body 10, will mean that the aforementioned engagement between the support body 10 and the control element 75 has taken place.
  • the force that is necessary to cause a displacement of the support body 10 will be less than the aforementioned threshold value, will mean that the support body 10 has not been engaged, due to the presence of the abrasive element 20 constrained to the same, to the control element 75.
  • the detection device 80 is provided integral to the control element 75.
  • the detection device 80 is provided integral to the control element 75.
  • the movement of the support body 10 by the displacement device 40 will produce a force on the control element 75 greater than a predetermined threshold value.
  • the force that will be applied on the control element 75 during the aforementioned movement will not be able to produce any force on the control element 75, or anyway a force less than the aforementioned predetermined threshold value.
  • the detection device 80 advantageously, comprises at least a force sensor.
  • the control element 75 can move with respect to a fixed base body 71.
  • the detection device 80 can be advantageously configured to detect any movement of the control element 75 with respect to the fixed base body 71, during the aforementioned movement of the support body 10 by the displacement device 40. More precisely, in the case that the abrasive element 20 is not present at the support body 10, the third engagement elements 73 of the control surface 76 engage with the first engagement elements 13 of the engagement surface 15 of the support body 10. Therefore, the aforementioned movement caused by the displacement device 40 will cause a movement of the control element 75 that will be, therefore, detected by the detection device 80 ( figure 4 ).
  • the aforementioned first and third engagement elements 13 and 73 cannot engage with each other, because the third engagement elements 73 will enter into contact with the abrasive surface of the abrasive element 20 and not with the engagement surface 15 provided with the first engagement elements 13 of the support body 10. Therefore, the detection device 80 will not detect any movement of the control element 75 with respect to the fixed base body 71, or, anyway, a movement shorter than a predetermined displacement ⁇ s, due to the interaction between the support body 10, or more precisely between the abrasive element 20 and the control element 75.
  • the detection device 80 can comprise, advantageously, at least a movement sensor and/or at least an accelerometer and/or at least a rotation sensor and/or at least an encoder and/or at least a limit position sensor.
  • control element 75 is configured to translate with respect to the fixed base body 71.
  • the displacement device 40 is, advantageously, arranged to cause the support body 10 to translate along a predetermined translation direction.
  • control element 75 is configured to rotate about a first predetermined rotation axis 175 with respect to the fixed base body 71.
  • the displacement device 40 will be arranged to cause the support body 10 to rotate about a second predetermined rotation axis 110.
  • the rotation axis 175 and the rotation axis 110 can be parallel one another, in particular coincident, or can be inclined at a predetermined angle one with respect to the other.
  • the fixed base body 71 is hollow, for example with cylindrical shape, and a stem 72 is provided having an end 72a slidingly mounted within the cavity of the fixed base body 71, and the opposite end 72b fixed to the verification element 75.
  • the detection device 80 can be configured to detect the displacement of the control element 75 by detecting the displacement of the stem 72.
  • control device 70 can provide a stop element 78 configured to stop the movement of the control element 75 with respect to the fixed base body 71. More in particular, in the example of figure 5 , the stop element 78, once that a predetermined limit position is reached, can be arranged to cause the first engagement elements 13 and the third engagement elements 73 to disengage from each other after a predetermined translation stroke, or a predetermined rotation, of the control element 75 with respect to the fixed base body 71.
  • the stop element 78 can be configured to move the control element 75 back to a starting position with respect to the fixed base body 71.
  • the stop element can be an elastic element, for example a linear spring, or an actuator, in particular a pneumatic actuator, advantageously with adjustable pressure, as diagrammatically shown in figure 5 , arranged to oppose the aforementioned displacement by applying a predetermined force. More in particular, in this case, the force applied by the stop element on the control element 75 is substantially constant.
  • the displacement device 40 it is possible to move in sequence the displacement device 40 for positioning the same in different positions with respect to the control element 75. In this way, it is possible to avoid that the missing engagement of the first and the third engagement elements 13 and 73 can be caused by a not correct relative positioning between the support body 10 and the control element 75 and, therefore, that the missing detection by the detection device 80 could be skewed.
  • control element 75 is provided with a plurality of control surfaces 73, in the case that is shown in figure 8 , 5 control surfaces 73a-73e.
  • each control surface 73a-73e can be provided with a sensor working independently from the others.
  • the aforementioned detection device 80 can, in this case, provide a plurality of detection elements, not shown in the figures for simplicity, each of which operatively connected to a respective control surface 73a-73e, in such a way to detect if any engagement have taken place, or not, with the respective portion of the support body 10.
  • This solution allows to detect, in particular, the presence of one, or more, fragments, of the abrasive element 20 engaged with the support body 10 also after having carried out a removal operation.
  • the abrasive element 20 can beak apart and, therefore, considerably reduce its surface and produce a fragment, or more, fragments separated one from the others. Therefore, in these cases, it is possible that the removal operation can fail.
  • the control device 70 comprises a plurality of control elements 75, for example 4 control elements 75a-75d.
  • Each control element 75a-75d has a respective control surface 76a-76d provided with respective third engagement elements 73a-73d, each of which configured to engage with said first engagement elements 13 of the support body 10, or with a predetermined portion of the same.
  • each control element 75a-75d can be advantageously associated to a respective detection device 80a-80d, each of which configured to detect if any engagement between the respective control element 75a-75d and the support body 10, or more precisely, a respective portion of this, has taken place, during the movement of the support body 10 by the displacement device 40.
  • the stop element is a passive pneumatic actuator arranged to generate a negative pressure, and not a positive pressure, as in the previous case, on a configurable reservoir.
  • the force applied by the stop element on the control element 75 is an increasing force.
  • the apparatus 100 can comprise, furthermore, a processing unit 300 configured to receive and elaborate the data detected by the detection device 80 and in case to command the displacement device 40 to repeat the verification, in particular both after having verified the presence, or the absence of the abrasive element 20 at the support body 10, or to go back to a removal station if present and carry out the removal operation of the abrasive element 20 from the support body 10, in case that the presence of the abrasive element 20 at the support body 10 has been detected, or to an application station and carry out the application of a new abrasive element 20 to the support body 10, in case that the absence of the abrasive element 20 at the support body 10 has been verified.
  • a processing unit 300 configured to receive and elaborate the data detected by the detection device 80 and in case to command the displacement device 40 to repeat the verification, in particular both after having verified the presence, or the absence of the abrasive element 20 at the support body 10, or to go back to a removal station if present and carry out the removal operation of the abra
  • the apparatus 100 in addition to the aforementioned machine for finishing surfaces 1, as described above, can comprise at least a removal station, not shown in the figures for reasons of simplicity, configured to remove the worn abrasive element 20 from the support body 10 and/or at least an application station, also this not shown in the figures for reasons of simplicity, for applying a new abrasive element 20 al support body 10.
  • the aforementioned control station for verifying the presence, or absence, of the abrasive element 20 at the support body 10 can be positioned between the removal station and the application station of a new abrasive element 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (15)

  1. Appareil (100) destiné à vérifier la présence, ou l'absence, d'un élément abrasif (20) dans une machine (1) pour la finition de surfaces, ladite machine (1) comprenant :
    - un corps de support (10) conçu pour mettre en prise de manière amovible ledit élément abrasif (20), ledit corps de support (10) et ledit élément abrasif (20) étant, respectivement, dotés, au niveau de surfaces de mise en prise respectives (15, 25), de premier et deuxième éléments de mise en prise (13, 23) conçus pour se déplacer d'une configuration de mise en prise à une configuration de séparation, et inversement ;
    - un dispositif de déplacement (40) conçu pour déplacer ledit corps de support (10) dans l'espace selon au moins 1 degré de liberté ;
    ledit appareil (100) comprenant :
    - au moins une station de commande (250) agencé pour vérifier la présence, ou l'absence, dudit élément abrasif (20) au niveau dudit corps de support (10) ;
    - un dispositif de commande (70) agencé dans ladite station de commande (250) et comprenant un élément de commande (75) possédant une surface de commande (76), ledit dispositif de déplacement (40) étant agencé pour amener ledit corps de support (10), ou l'élément abrasif (20) contraint sur celui-ci, s'il est présent, en contact avec ladite surface de commande (76) dudit élément de commande (75) et pour entraîner un mouvement dudit corps de support (10) ;
    - un dispositif de détection (80) conçu pour détecter si une mise en prise entre ledit élément de commande (75) et ledit corps de support (10) a eu lieu, durant ledit mouvement dudit corps de support (10) par ledit dispositif de déplacement (40) ;
    ledit appareil étant caractérisé en ce que ladite surface de commande (76) est dotée de troisièmes éléments de mise en prise (73) conçus pour se mettre en prise avec lesdits premiers éléments de mise en prise (13) dudit corps de support (10).
  2. Appareil (100) selon la revendication 1, ledit dispositif de détection (80) étant conçu pour détecter la force appliquée par ledit dispositif de déplacement (40) sur ledit corps de support (10), ou ledit élément de commande (75), pour déplacer ledit corps de support (10) par rapport audit élément de commande (75), après avoir amené ledit corps de support (10), ou l'élément abrasif (20) contraint sur celui-ci, s'il est présent, en contact avec ledit élément de commande (75).
  3. Appareil (100) selon la revendication 1, ledit élément de commande (75) étant fonctionnellement raccordé libre de se déplacer jusqu'à un corps de base fixe (71), et ledit dispositif de détection (80) étant conçu pour détecter le déplacement dudit élément de commande (75) par rapport audit corps de base fixe (71) entraîné par ledit mouvement dudit corps de support (10) par rapport audit élément de commande (75), après avoir amené ledit corps de support (10), ou l'élément abrasif (20) contraint sur celui-ci, s'il est présent, en contact avec ledit élément de commande (75).
  4. Appareil (100) selon l'une quelconque des revendications précédentes, ledit dispositif de détection (80) étant sélectionné dans le groupe comprenant :
    - au moins un capteur de force ;
    - au moins un capteur de mouvement ;
    - au moins un accéléromètre ;
    - au moins un capteur de rotation ;
    - au moins un codeur ;
    - au moins un capteur de position limite ;
    ou une combinaison de ceux-ci.
  5. Appareil (100) selon l'une quelconque des revendications précédentes, un élément de butée (78) étant, en outre prévu, conçu pour arrêter ledit mouvement dudit élément de commande (75) par rapport audit corps de base fixe (71), et pour amener lesdits premiers éléments de mise en prise (13) à se séparer desdits troisièmes éléments de mise en prise (73), ledit élément de butée (78) étant conçu pour ramener ledit élément de commande (75) vers une position de départ par rapport audit corps de base fixe (71).
  6. Appareil (100) selon l'une quelconque des revendications précédentes, ledit élément de commande (75) étant conçu pour se translater par rapport audit corps de base fixe (71), et ledit dispositif de déplacement (40) étant agencé pour entraîner la translation dudit corps de support (10) selon une direction de translation prédéfinie.
  7. Appareil (100) selon l'une quelconque des revendications précédentes, ledit élément de commande (75) étant conçu pour tourner autour d'un premier axe de rotation prédéfini (175) par rapport audit corps de base fixe (71), et ledit dispositif de déplacement (40) étant agencé pour entraîner la rotation dudit corps de support (10) autour d'un second axe de rotation prédéfini (110).
  8. Appareil (100) selon la revendication 3, ledit corps de base fixe (71) étant creux et étant une tige (72) qui est prévue de posséder une extrémité (72a) montée de manière coulissante à l'intérieur dudit corps de base creux fixe (71) et une autre extrémité (72b) fixée audit élément de commande (75), ledit dispositif de détection (80) étant agencé pour détecter le déplacement dudit élément de commande (75) en détectant le déplacement de ladite tige (72).
  9. Appareil (100) selon l'une quelconque des revendications précédentes, lesdits premiers et deuxièmes éléments de mise en prise (13, 23) étant agencés pour venir en prise par encliquetage les uns avec les autres.
  10. Appareil (100) selon l'une quelconque des revendications précédentes, lesdits premiers et deuxièmes éléments de mise en prise (13, 23) comprenant, respectivement, des premières et secondes parties de velcro agencées pour venir en prise mutuellement de manière réversible les unes avec les autres.
  11. Appareil (100) selon l'une quelconque des revendications précédentes, ledit dispositif de déplacement (40) étant un robot anthropomorphe possédant un nombre de degrés de liberté défini entre 2 et 6.
  12. Appareil (100) selon l'une quelconque des revendications précédentes, ledit dispositif de commande (70) comprenant une pluralité d'éléments de commande (75a-75d), chaque élément de commande (75a-75d) étant doté d'une surface de commande respective (76a-76d) dotée de troisièmes éléments de mise en prise respectifs (73a-73d), et chaque troisième élément de mise en prise (73a-73d) étant conçu pour venir en prise avec lesdits premiers éléments de mise en prise (13) dudit corps de support (10), ou une partie prédéfinie de celui-ci, chaque élément de commande (75a-75d) de ladite pluralité étant associé à un dispositif de détection respectif (80a-80d), dont chacun est conçu pour détecter si une mise en prise de l'élément de commande respectif (75a-75d) avec une partie respective dudit corps de support (10) a eu lieu, durant le mouvement dudit corps de support (10) par ledit dispositif de déplacement (40).
  13. Appareil (100) selon l'une quelconque des revendications précédentes, une unité de traitement (300) étant, en outre prévue, conçue pour recevoir et élaborer les données détectées par ledit dispositif de détection (80) et au moins une station de retrait étant, en outre prévue, conçue pour enlever ledit élément abrasif usé (20) par ledit corps de support (10), ladite unité de traitement (300) étant conçue pour commander audit dispositif de déplacement (40) de se positionner à nouveau au niveau de ladite station de commande (250) pour vérifier à nouveau la présence, ou l'absence, dudit élément abrasif (20) au niveau dudit corps de support (10), ou, après avoir vérifié au niveau de ladite station de commande (250) la présence dudit élément de support (20) sur ledit corps de support (10), de retourner à ladite station de retrait et d'effectuer une opération de retrait dudit élément abrasif (20) dudit corps de support (10).
  14. Appareil (100) selon la revendication 13, comprenant, en outre, au moins une station d'application conçue pour appliquer un nouvel élément abrasif (20) sur ledit corps de support (10), ladite unité de traitement (300) étant conçue pour commander audit dispositif de déplacement (40), de se positionner à nouveau au niveau de ladite station de commande (250) pour vérifier à nouveau la présence, ou l'absence, dudit élément abrasif (20) au niveau dudit corps de support (10), ou après avoir vérifié au niveau de ladite station de commande (250) l'absence dudit élément abrasif (20) au niveau dudit corps de support (10) de retourner à ladite station de retrait et effectuer une opération d'application dudit nouvel élément abrasif (20) au niveau dudit corps de support (10).
  15. Procédé permettant de vérifier la présence, ou l'absence, d'un élément abrasif (20) avec un appareil selon l'une quelconque des revendications précédentes dans une machine (1) pour la finition de surfaces prévoyant les étapes de :
    - fourniture d'un corps de support (10) conçu pour venir en prise de manière amovible avec ledit élément abrasif (20), ledit corps de support (10) et ledit élément abrasif (20) étant prévus, au niveau de surfaces de mise en prise respectives (15, 25), respectivement des premiers et deuxièmes éléments de mise en prise (13, 23) conçus pour se déplacer d'une configuration de mise en prise à une configuration de séparation ;
    - fourniture d'un dispositif de déplacement (40) conçu pour déplacer ledit corps de support (10) dans l'espace selon au moins 1 degré de liberté ;
    - fourniture d'un élément de commande (75) possédant une surface de commande (76) ;
    - entraînement dudit corps de support (10), ou dudit élément abrasif (20) en prise sur ledit corps de support (10), s'il est présent, pour venir en contact avec ladite surface de commande (76) ;
    - déplacement dudit corps de support (10) par ledit dispositif de déplacement (40) ; et
    - détection pour savoir si une mise en prise quelconque entre ledit élément de commande (75) et ledit corps de support (10) a eu lieu, par un dispositif de détection (80), durant ledit mouvement dudit corps de support (10) par ledit dispositif de déplacement (40) ;
    ledit procédé étant caractérisé en ce que ladite surface de commande (76) est dotée de troisièmes éléments de mise en prise (73) conçus pour venir en prise avec lesdits premiers éléments de mise en prise (13) de ladite surface de mise en prise dudit corps de support (10).
EP20758341.0A 2019-07-11 2020-07-07 Appareil permettant de vérifier la présence ou l'absence d'un élément abrasif dans une machine pour le traitement de surfaces Active EP3996873B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000011454A IT201900011454A1 (it) 2019-07-11 2019-07-11 Apparecchiatura per verificare la presenza, o l’assenza, di un elemento abrasivo in una macchina per la lavorazione di superfici
PCT/IB2020/056360 WO2021005499A1 (fr) 2019-07-11 2020-07-07 Appareil permettant de vérifier la présence ou l'absence d'un élément abrasif dans une machine pour le traitement de surfaces

Publications (4)

Publication Number Publication Date
EP3996873A1 EP3996873A1 (fr) 2022-05-18
EP3996873B1 true EP3996873B1 (fr) 2023-08-30
EP3996873C0 EP3996873C0 (fr) 2023-08-30
EP3996873B8 EP3996873B8 (fr) 2023-11-15

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EP20758341.0A Active EP3996873B8 (fr) 2019-07-11 2020-07-07 Appareil permettant de vérifier la présence ou l'absence d'un élément abrasif dans une machine pour le traitement de surfaces

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US (1) US20220362905A1 (fr)
EP (1) EP3996873B8 (fr)
IT (1) IT201900011454A1 (fr)
WO (1) WO2021005499A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562968A (en) 1969-03-12 1971-02-16 Minnesota Mining & Mfg Surface treating tool
DE102012006502A1 (de) * 2012-03-29 2013-10-02 Dula-Werke Dustmann & Co. Gmbh Verfahren zum mehrstufigen Schleifen von Werkstücken, sowie Vakuumtisch, Vorratsbehälter, Abstreifeinrichtung und Anlage zur Durchführung des Verfahrens
FR2999107B1 (fr) * 2012-12-10 2015-01-09 Univ Nantes Dispositif de poncage comprenant des moyens de changement de disque abrasif
US10532444B2 (en) 2014-02-20 2020-01-14 Fabrica Machinale S.R.L. Apparartus for changing an abrasive sheet in an abrading machine
EP3727745B1 (fr) * 2017-12-20 2023-08-23 Fabrica Machinale S.r.l. Procédé et appareil permettant de réaliser le remplacement d'un élément abrasif dans une machine permettant d'usiner des surfaces

Also Published As

Publication number Publication date
WO2021005499A1 (fr) 2021-01-14
US20220362905A1 (en) 2022-11-17
EP3996873A1 (fr) 2022-05-18
IT201900011454A1 (it) 2021-01-11
EP3996873C0 (fr) 2023-08-30
EP3996873B8 (fr) 2023-11-15

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